<template>
  <el-container>
    <!-- 头部区域 -->
    <el-header>
      <div>
        <img src="../assets/heima.png" alt />
        <span>后台管理系统</span>
      </div>
      <el-button type="info" @click="logout">退出登录</el-button>
    </el-header>
    <!-- 主体区域 -->
    <el-container>
      <!-- 侧边栏区域 -->
      <el-aside :width="iscollapse ? '64px':'200px'">
          <div class="toggle-btn" @click="zedie">|||</div>
        <el-menu background-color="#333744" text-color="#fff" active-text-color="#409EFF" :collapse="iscollapse" unique-opened :collapse-transition="false"
        router :default-active="activePath">
          <el-submenu :index="item.id+''" v-for="item in menulist" :key="item.id">
            <template slot="title">
              <i :class="iconsObj[item.id]"></i>
              <span>{{item.authName}}</span>
            </template>
            <el-menu-item :index="'/'+subitem.path" v-for="subitem in item.children" :key="subitem.id" @click="saveNavState('/'+subitem.path)">
              <template slot="title">
                <i class="el-icon-menu"></i>
                <span>{{subitem.authName}}</span>
              </template>
            </el-menu-item>
          </el-submenu>
        </el-menu>
      </el-aside>
      <!-- 主体区域 -->
      <el-main>
          <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>
<script>
export default {
  data() {
    return {
      menulist: [],
      iconsObj: {
        '125': 'iconfont icon-user',
        '103': 'iconfont icon-tijikongjian',
        '101': 'iconfont icon-shangpin',
        '102': 'iconfont icon-danju',
        '145': 'iconfont icon-baobiao'
      },
      iscollapse: false,
      activePath: ''
    }
  },
  created() {
    this.getMenuList()
    this.activePath = window.sessionStorage.getItem('active')
  },
  methods: {
    logout: function () {
      window.sessionStorage.clear()
      this.$router.push('/login')
    },
    async getMenuList() {
      const { data: res } = await this.$http.get('menus')
      if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
      this.menulist = res.data
    //   console.log( this.menulist);
    },
    zedie() {
      this.iscollapse = !this.iscollapse
    },
    saveNavState(index) {
      window.sessionStorage.setItem('active', index)
      this.activePath = index
    }
  }
}
</script>

<style lang="less" scoped>
.el-header {
  background-color: #373d41;
  display: flex;
  justify-content: space-between;
  padding-left: 0;
  color: #fff;
  font-size: 20px;
  align-items: center;
  > div {
    display: flex;
    align-items: center;

    span {
      margin-left: 15px;
    }
  }
}

.el-main {
  background-color: #eaedf1;
}

.el-aside {
  background-color: #333744;
  .el-menu {
      border-right: 0;
  }
}
.el-container {
  height: 100%;
}
.iconfont {
    margin-right: 10px;
}
.toggle-btn {
    color: #fff;
    background-color: #4a5064;
    text-align: center;
    letter-spacing: 0.2em;
    font-size: 10px;
  line-height: 24px;
    cursor: pointer;
}
</style>
